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G. STITES.' MACHINE PON GOILING AND TEMPBNING SPRINGS.

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G. STITES. MACHINE FOR GOILING AND TEMPERING SPRINGS. No. 280,529. Patented July 3,A 1883.

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MACHINE FOR GOILING AND TEMPERING SPRINGS.

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G. STITES. MACHINE PoR-Gomme AND TEMPERING SPRINGS.

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Patented July 3, 1883.

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UNI-TED STATES PATENT Prien.4

GEORGE STITES, OF PHILADELPHIA, PENNSYLVANIA., ASSIGNOR TO CHARLES MACE, OF SAME PLACE.

MACHINE FOR COILING AND TEIVIPERING SPRINGS.

SPECIFICATION forming part of Letters Patent No. 280,529, dated July 3, 1883. Application filed December 2, 1882. (No model.)

To LQZZ whom t may concern:

Be it known that I, GEORGE Srrrns, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in a Machine for Coiling and Tempering Springs for Car -Motors, duc., of which the following is a specification.

My invention consists of a machine which is Io provided with cams, in combination with feedrollers and other devices, whereby sheets or strips of steel of any. desirable length are brought each into a continuous coil, being softened by passing through a heating-chamber i 5 preparatory to the coiling operation. They are afterward passed through the machine and heatingchamber and subjected to a proper heat (continuously) for tempering them, after which they pass through the chilling-chamber.

2o The construction and operation of the coiling and tempering machine are hereinafter fully described. Although the title above relates to springs for car-motors, I design the invention for all springs for which it is applicable.

In the accompanying drawings, which make a part of this specification, Figure l is a plan view of the machine. Fig. 2, Sheet No. 2, is a fronty elevation of the same. Fig. 3, Sheet No. 3, is a side elevation. Fig. 4, Sheet N o. 4, is a diagram of a portion of the imier end of the coiled spring D and coiling and heating devices and the heating-chamber L. Fig. 5 is a side elevation of the coiling devices. Fig. 6 is a vertical section of a universal joint, N, having a plug, C. Figs. 7 and 8 are respectively a top view and vertical section of a slid` ing j ournal-bearing, b2, of the front feed-roller, C. Figs. 9 and 10 are like views of one of the bearings b ofthe presser-roller C. Fig. l1,

Sheet No. 5, is a diagram of the feed-rollers4 horizontal frames A and A, connecting-posts 5o a a a a., and housings B I3.

C and C are rollers which feed the sheets D during the ceiling and tempering operations, and C2 C2 are guide-rollers for the sheets or strips. In -order to coil the spring with proper curvature from end to end in its forward movement from the feed-rollers C and C, I employ a roller, C", for deilecting it from a straight line, and to graduate the curvature of the coil the journals of said roller have bear- 6o ings b b, which are adapted to slide in the slots c c of the base-frames A and A, as they are pressed upon by the revolving cams E E, which are situated on the ends of the revolving shaft F, the cams being of the proper curvature to give the right shape to the spring from end to end, as they impinge upon said bearings I) Z) from the point of commencement near the shaft to their extreme termination during one revolution of the shaft F, the latter having a geared 7o connection with the feed-rollers C and C, as hereinafter described. rIhe journal-bearings of the feed-roller C have a fixed position in the base-frames A and A', but the bearings b2. b2 of the roller C are permitted to slide in the 75 slots c c', being pressed upon by the elliptical springs d, as shown in Figs. 7 and S, to cause the requisite pressure upon the sheet D to insure an accurate feeding of the same. The pressure is regulated by means of the screws 8o c c, as represented in Figs. l and 3.

The revolutions of the rollers C and C are given by means of the driving-shaft G, having a pinion, H, gearing into the wheel I on the shaft Gf, the pinion I-I on said shaft gearing 8 5 into the wheel I( on the shaft G2, and the bevelpinion H2 on said shaft gearing into the bevelwheel I2 on the upper end of the feed-roller C, and the said roller having a geared connection with the roller C by means of the spur- 9o wheels I;i and I", respectively, on the lower ends of said rollers; and as the feedrollers are revolved in the direction of the arrows the spring-sheet D is fed forward with suitable velocity for its being properly heated for soft- 9 5 ening as it passes through the heating-chamber L, preparatory to being coiled by the action of the revolving cams E E and roller C',

above described. Simultaneously with the forward movement of the sheet D, in its passage through the heating-chamber L, the cams are revolved by means oi' the connection ot' the shaft F of the cams with the feed-roller l', there being a thread, c, on the neck of the upper end of said roller which gears into the pinion Hi on the upper end ofthe inclined shaft G, the other end ot` the shaft having a worm,

1o f, which gears into the pinion H* on the upper end ot' the said cam-shalt. rPhe gearing ot'the cam-shaft is constructed, after accurate calculations, to give the right velocity to t-hc shaft to terminate the action ot' the revolving cams with the sheet of steel l) when the coiling is inished. As the spring Dis coiled and advances from the ceiling devices, carriers J are connected with each round, as represented in the diagram, Fig. 4, the wheels f/ resting on the floor to prevent friction, and thus facilitate the l'ree turning` around ofthe spring.

rlhe heat-ing apparatus is constructed as follows M is a pipe for supplying the heating-chamber L with gas, which is introduced by means ot' a hose connected with the inlet-opening lzy by means of the ilange i, the pipe having a stop-cock, j, for cutting oit' the supply of gas. For the purpose of giving adj ustability to the heating-chamber L, the pipe M, as shown in the drawings, is made in sections l, 2, 3, 4, and 5, and branch sections 6 (i, which are conneet-ed with the ends of the cross-section 5, as more clearly shown in Fig. l. Projecting from the sections o' 6 are the series of vertical pipes M, which are connected at their lower ends, by means of littings Z, with the heating-chamber L, theiittings terminating with nozzles Z, which are inserted in suitable openings of the vertical sides m m of the chamber, whereby the gas tlows through the continuous sections and branches ofthe pipe M it is thrown in j ets upon the opposite sides ol the sheet l), as seen in Fig. l, to uniformlyheat it as it passes through the chamber. rlhe pipes have stop-cocks 7" at their upper ends to regulate the supply ot' gas to the nozzles or burners. To give ilexibility to the combined pipe M, so as to provide for changing the position ol" theheating-chamber L, as hereinafter described, there isa universal joint, N, at the junction of sections 2 and 3, which is provided with a plug, O, that has a permanent connection with section 2, and there is a like joint, N, which has aplug, O, at the junction of sections 3 and 4, the plug having a permanent connection with section 4. One ot' these joints is shown in detail in Fig. 6.

P is an air-pipe, through which airis forced by any suitable device into the heating-chamber L to promote the combustion of the gas, the air entering the inlet-opening h from a hose connected with the tlange i. The pipe is provided with a stop-cock, j?, for cutting oft' the supply ol' air. For the same purpose as stated in relation to the gas-pipe M this pipe is also made in scctions,whieh are lettered c, c?, u, c", and c5, the latter having branch pipes c a", as more clearly seen in Fig. l.. rPhere is a series of vertical pipes, P', connected at their upper ends with each branch pipe c, and at their lower ends with the fittings with which the branch pipes M are connected, as described above, the openings which receive them connecting with the gas-passages which lead into the heating-chamber L, as shown in Fig. l5, whereby as the air is forced through the pipe P and its continuous sections and their branch pipes it mixes with the gas as the latter enters said heating-chamber and promotes the combustion, theintensity ofthe jets being regulated by means ol the stop-coc tsj". In order to give iiexibility to the air-pipe P for the same purpose as stated in relation to the gaspipe M, there is a universal joint, Ni, at the junction of the sections a? and a, and a like joint at the junction ot' the sections ai* and af,

having, respectively, plugs oZ and o3. These universal joints and plugs are exactly like those of the gas-pipe M, one of which is represented in detail in Fig. (i. W'hen the coilv ing of the spring D is completed, the guiderollers )t and the ceiling device, consisting of the presser-roller C" and the shaft F, having ceiling-cams E E, are removed out or the way and the spring is turned around il'ar enough to bring the outer end ofthe coil into connection with the feed-rollers (j Y, as rcpresented in the diagram, Fig. lll., Sheet No. 5, the heating-chamber L being adjusted into proper position for such connection by the gaspipe M and air-pipe P, turning upon the plugs O and O, respectively, the pipes being tumed around by hand or any suitable means. ln order to relieve the connection ot' these pipes with the frame ol' the machine ot' the weight or the series of pipes and the heating-chamber, there is a vertical strap proj ected l'rom the point X, which is provided with a friction-wheel that rests upon a circular railway, on which it runs as the connected pipes are turned around. The railway is not shown in the drawings. The chilling-chamber L is further adjusted as may be necessary to suit the direction ot' the coil ofthe spring D as it passes through the chamber by giving the sections of the pipes M and P a suitable turn from time to time on the plugs O and O, respectively. As the spring D is fed through the heating-chamber L and subjected to the proper heat for tempering, it passes through the chilling-chamber L, which is shown in position in the diagram, Fig. 1l, and in detail in Fien 12 and '13, and is chilled suitably for tempering by a blast of cold air, which is forced through a hose connected with the nange i ol' the inlet-opening h2 of the chilling-chamber, and passes through perforations in its opposite branches upon the opposite side of the spring D. V

S is a circular railway upon which the chilling-chamber L is placed, and arranged, as shown, in proper position with the heating- IOO ' spring passes through it.

The plan of heating and chilling straight springs continuously as they are passed through a stationary heating-chamberand a chilling-chamber in combination therewith is shown in the patent of Hiram A. Kimball, dated February 15, 1881, and numbered 237,754, but the peculiar construction of the heating and chilling apparatus, whereby adjustability is given to the heating and chilling chambers, which adapts them to tempering coil-springs, is believed to be new andto have been originated by me.

I claim as my inventionl. rlhe combination of the feed-rollers C and C', presser-roller C3, and shaft F, having cams E E, s ubstantially in the manner and for the y purpose set forth. A

2. The combination of the coiling mechanism, substantially as described, with the heating apparatus for coiling springs by a continu ous operation, substantially as described.

3. rlhe shifting carriers J, having friction' Wheelsy g for facilitating the movement of the spring D as it is adjusted, substantially as described.

4. The combination of the gas-pipe M and air-pipe P, made' in sections, and connected together by means of universal joints N, N, N, and N, having keys O, O', O2, and O, and branch pipes, substantially as described, with the heating-chamber L, the frame of the machine being relieved of the weight of thepipes and heating-chamber by means of an elevated railway and connecting-strap, substantially as described.

5. The adjustable chilling-chamber L', jointly with the heating-chamber L, in combination With the gas and air pipes M and l), substantially in the manner and for the purpose set forth.

6. The adjustable chillingchamber L', jointly with the railway S, substantially as and foi-thc purpose set forth.

l GEORGE STITES.

-Witnesses:

THOMAS J. BnWLnY, STEPHEN Us'rioK. 

